Composite fluid transfer conduit

A composite fluid transfer conduit comprising:

• a first end portion;
• a second end portion;
• and
• a main body portion between the first and second end portions;
• wherein at least one of the first and second end portions is an end portion comprising:
• a circumferential groove in a radially outer surface of the fluid transfer conduit;
• an axial end face;
• and
• a transition surface between the axial end face and the circumferential groove;
• wherein the transition surface includes a tapered surface portion and a convex curved portion, wherein the tapered surface portion extends between the axial end face and the convex curved portion and the convex curved portion extends from the tapered surface portion to the circumferential groove, where the transitional surface is configured such that, for any angle of impact of the convex curved portion with a planar impact surface, a resultant impact force on the convex curved portion is directed radially inward of the circumferential groove located at an end where the impact occurred, wherein the tapered surface extends from the axial end face at an angle of from 5 degrees to 45 degrees with respect to a plane of the axial end face and wherein the convex curved surface has a radius of curvature of from 1 mm to 10 mm.